90142760

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{25321}}^1$

素因数の和:25421

約数の個数: 32

約数和(自身を含む): 205108200

約数和(自身を除く): 114965440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 25321, 50642, 101284, 126605, 202568, 253210, 506420, 1012840, 2253569, 4507138, 9014276, 11267845, 18028552, 22535690, 45071380, 90142760]

約数ペア:

[(1, 90142760), (2, 45071380), (4, 22535690), (5, 18028552), (8, 11267845), (10, 9014276), (20, 4507138), (40, 2253569), (89, 1012840), (178, 506420), (356, 253210), (445, 202568), (712, 126605), (890, 101284), (1780, 50642), (3560, 25321)]